Make vfs_path_lookup() use starting point as root

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 4 insertions, 5 deletions

diff --git a/fs/namei.c b/fs/namei.c
index 88baaf2b9167..4379ef989709 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1123,21 +1123,20 @@ int vfs_path_lookup(struct dentry *dentry, struct vfsmount *mnt,
         nd->last_type = LAST_ROOT;
         nd->flags = flags;
         nd->depth = 0;
-        nd->root.mnt = NULL;
 
         nd->path.dentry = dentry;
         nd->path.mnt = mnt;
         path_get(&nd->path);
+        nd->root = nd->path;
+        path_get(&nd->root);
 
         retval = path_walk(name, nd);
         if (unlikely(!retval && !audit_dummy_context() && nd->path.dentry &&
                                 nd->path.dentry->d_inode))
                 audit_inode(name, nd->path.dentry);
 
-        if (nd->root.mnt) {
-                path_put(&nd->root);
-                nd->root.mnt = NULL;
-        }
+        path_put(&nd->root);
+        nd->root.mnt = NULL;
 
         return retval;
 }